The synthesis of three-dimensional (3D) polydopamine-functioned carbonyl iron powder@polypyrrole (CIP@PPy) aerogel composites for excellent microwave absorption

Sui, Mingxu; Lu, Xuliang; Xie, Aming; Xu, Wenlan; Rong, Xianhui; Guojing, Wu

doi:10.1016/j.synthmet.2015.09.025

Cited by 38 publications

(15 citation statements)

References 45 publications

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“…18 Reflection loss of GNpFe 3 O 4 @ZnO composites with thickness 1-5 mm 181reproduced by permission of the Royal Society of Chemistry. Creative Commons Attribution 3.0 Unported Licence.investigated by Zhang et al[260][261][262][263] On other hand, magnetic materials show magnetic losses such as hysteresis, electron spin resonance and domain wall resonance etc. Additionally, magnetic materials with relatively higher electrical conductivity exhibit great conduction losses.…”

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confidence: 99%

Review of electromagnetic interference shielding materials fabricated by iron ingredients

2019

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confidence: 99%

Review of electromagnetic interference shielding materials fabricated by iron ingredients

2019

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“…One phenomenon can be observed that all the samples achieve the minimum RL value at a certain thickness, and all their RL peaks shift to lower frequency with the increasing thickness. To illustrate why the RL peaks appear at these certain thicknesses, the simulations of the matching thickness versus the achieved peaks frequency are completed based on the equation: t m = nc /(4 f m

) [ 22 ]. When the matching thickness satisfies the equation, then the reflected wave and incident wave will be out of opposite phase, resulting in the dissipation at the interface.…”

Section: Resultsmentioning

confidence: 99%

“…Furthermore, the lightweight of PPy aerogel after drying out the solvent which also matches the feature of high-performance absorbers. So far, substantial efforts have been devoted to exploiting PPy based materials for EA advances and the exhibited performances are highly desirable, such as Fe 3 O 4 /PPy/PANI [ 21 ], PPy/RGO (reduced graphene oxide) [ 12 ], CIP (carbonyl iron powder)@PPy [ 22 ], γ-Fe 2 O 3 /PPy [ 23 ], and PPy/SiC [ 24 ].…”

Section: Introductionmentioning

confidence: 99%

Decorating MOF-Derived Nanoporous Co/C in Chain-Like Polypyrrole (PPy) Aerogel: A Lightweight Material with Excellent Electromagnetic Absorption

Sun

Sui

et al. 2018

Materials

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To clear away the harmful effects of the increment of electromagnetic pollution, high performance absorbers with appropriate impedance matching and strong attenuation capacity are strongly desired. In this study, a chain-like PPy aerogel decorated with MOF-derived nanoporous Co/C (Co/C@PPy) has been successfully prepared by a self-assembled polymerization method. With a filler loading ratio of 10 wt %, the composite of Co/C@PPy could achieve a promising electromagnetic absorption performance both in intensity and bandwidth. An optimal reflection loss value of −44.76 dB is achieved, and the effective bandwidth (reflection loss lower than −10 dB) is as large as 6.56 GHz. Furthermore, a composite only loaded with 5 wt % Co/C@PPy also achieves an effective bandwidth of 5.20 GHz, which is even better than numerous reported electromagnetic absorption (EA) materials. The result reveals that the as-fabricated Co/C@PPy—with high absorption intensity, broad bandwidth, and light weight properties—can be utilized as a competitive absorber.

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“…For example, polycatecholamines have been used to bind reinforcing agents (boehmite nanoparticles, barium titanate nanoparticles, halloysite nanotubes, silver nanoparticles, short Kevlar fibers, bioactive glass particles, glass fiber, carbon fiber, reduced graphene oxide, and carbon nanotubes) to the bulk polymer to improve mechanical properties. Other examples include polydopamine coated boron nitride nanoparticles and carbon nanotubes used to improve composite thermal conductivity; polydopamine coated halloysite nanotubes, used to enhance the proton conductivity of proton exchange membranes; polydopamine coated metallic nanoparticles used to increase electrical conductivity; and polydopamine used to incorporate carbonyl iron microparticles and magnetite nanoparticles into composites used for microwave absorption.…”

Section: Applications Of Catecholamine Polymersmentioning

confidence: 99%

Versatile Surface Modification Using Polydopamine and Related Polycatecholamines: Chemistry, Structure, and Applications

Barclay

Hegab

Clarke

et al. 2017

Adv Materials Inter

301

223

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Almost ten years ago, Lee et al. [13] formulated a universal adhesive coating based on observation of the strong attachment by mussels through their byssal threads to virtually all types of inorganic and organic surfaces. The amino acid compositions of the mussel foot proteins that generate the attachment are rich in catechol and amine groups. [13][14][15] These groups associate under marine conditions, forming strong covalent and noncovalent interactions with substrates. [13] This led to the idea that both catechol and amine groups were crucial in forming robust, wide spectrum adhesive nanolayers [16,17] and consequently dopamine was conceived as a powerful building block for spontaneous deposition of thin polymer films. The dopamine monomer is deposited onto unadulterated surfaces through self-assembly and oxidative cross-linking from mild pH aqueous solution in a rapid reaction. This results in a durable, nanoscale, conformal, and hydrophilic coating that can be readily modified to introduce specific surface chemistries for a particular application. [18][19][20][21][22] These bioinspired, polydopamine materials are chemically and structurally indistinguishable from eumelanins found in the human body, [23,24] providing excellent biocompatibility. Additionally, polydopamine has broad electromagnetic absorption and excellent photothermal energy conversion [25] as well as having ionic-electronic hybrid conductivity. [26] Along with the excellent coating performance, these properties provide a vast array of potential applications for polydopamine materials.In this article, we explain what is known about polydopamine and related catecholamine coatings; their formation, the adhesion mechanism, and their physicochemical properties and we also review the applications of these materials (Figure 1). Since 2011, there have been a number of reviews on this subject matter, including general reviews on the physicochemical properties of polydopamine coatings [11,20,[27][28][29] and their applications. [20,27,30] There are also a number of more specific reviews on the chemical synthesis and modulation of polycatecholamine coatings, [31] the biomedical applications of these coatings, [8,[32][33][34] their electronic properties, [26,35] the use of polydopamine to make films at fluid interfaces, [36] in hierarchically constructed particles, [33] and capsules, [30] exploitation of polycatecholamine coatings in membrane filtration, [37] polydopamine-derived carbon materials, [38] and the use of coordination chemistry in catechol-based materials. [39] Nonetheless, this area of research is growing so rapidly [25,27] that many recent Polydopamine and related polycatecholamines can be easily deposited onto almost any surface from mild, aqueous solution. This results in durable, nanoscale coatings that exhibit high biocompatibility and have useful chemical and electronic properties. Additionally, these materials can be readily chemically and physically modified, and consequently, they are used extensively for surface modification. This ...

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The synthesis of three-dimensional (3D) polydopamine-functioned carbonyl iron powder@polypyrrole (CIP@PPy) aerogel composites for excellent microwave absorption

Cited by 38 publications

References 45 publications

Review of electromagnetic interference shielding materials fabricated by iron ingredients

Review of electromagnetic interference shielding materials fabricated by iron ingredients

Decorating MOF-Derived Nanoporous Co/C in Chain-Like Polypyrrole (PPy) Aerogel: A Lightweight Material with Excellent Electromagnetic Absorption

Versatile Surface Modification Using Polydopamine and Related Polycatecholamines: Chemistry, Structure, and Applications

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